Permission denied /var/lib/postfix/master.lock error
I recently migrated to a different server at a different location and now I'm experiencing a weird problem:
postfix/master: fatal: open lock file /var/lib/postfix/master.lock: cannot open file: Permission denied
I've googled around and can't get it to work. I've checked permission on /var/lib/ and things look good there:
I have exactly the same configurations as from the older server which is also running on debian squeeze.
Thanks in advanced for your time.
Under which account is postfix running? It should be "postfix" according to file permissions, check that.
If that is correct, try removing the file /var/lib/postfix/master.lock.
Postfix IS running under postfix.
I've already tried removing master.lock and continue with the same problem.
How about ownership and protection of the directory /var/lib/postfix? If the directory itself is not owned by postfix and/or the protection mask doesn't allow rwx, then the file cannot be created (that requires writing into the directory), and without x, cannot be searched during an open. Normally the lock file would be created if is missing, or just reused if present.
Good thinking, jpollard!
If that doesn't help, try temporary change permission on /var/lib/postfix and below to 777. If you still get the same error messsage then we need look somewhere else.
And with "temporary" I mean *temporary*!
That is, only keep it that way while testing, some 10 seconds or so, then immediately change back!
You never ever want world writable files on your server!
(Maybe you know this, but I felt I have to mention it - better safe than sorry!)
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